In an imperfect world your broilers (that's meat fowl to you & me) should be cooling their heels in the deep freezer long before they are old enough to learn the facts of life. Besides we are talking about chickens here. Even if a few of your broiler pullets do sneak off behind the barn and play doctor with your roo there will be no half formed baby chickens in your meat pullets' reproductive track to deal with when you butcher them. I am assuming that is why you're asking this question.If I only have one coop, how do you keep the roo from taking care f all the hens? I'm sorry. Total newb here but I really want to learn.
There are broiler breeds that are popular with backyard growers that require 6 to 12 months to grow off or get large enough for slaughter but why would anyone want to feed a hoggish broiler for three to nine extra months at an increased cost of $20 to $60 besides running the risk in the meantime of a: fox, coon, possum, hawk, dog, skunk, snake, coyote, mink, weasel, stoat, fisher cat, lynx, owl, or any of the many other things that eat their chicken raw beat you to your hard earned fried chicken dinner?